Good afternoon WkdPaul and thank you for posting on the Final Fantasy XIV Technical Support Forums.

When did this start happening? Did anything change/update on your PC that coincides with this?

When you reinstalled the game, did you delete the locally saved content (My Documents > My Games > Final Fantasy XIV)? It sounds like the game is having trouble writing to this folder.

We hope we can be of assistance in helping you enjoy the exciting world of Final Fantasy XIV!